Calculating-machine.



' E. SGHUSTER. CALCULATING MACHINE. APPLICATION FILED JAN. a, 1908.

901,748. Patented Oct. 20, 1908.

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E. SGHUSTER. CALCULATING MACHINE. APPLICATION FILED JAN. a, 1908.

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UNITEI) smrns PA ERNST SCHUSTER, or BERLIN, GERMANY.

' CALCULATING-MACHINE.

' 9 Application filed January 3, 1908. Serial No. 409,188;

To all whom it may concern:

Be it known that I, ERNST SoHUs'rER, a c tizen of the Kingdom of Prussia, and resident of Berlin, Germany, (whose. post-oflice address is Friedrichstrasse39 have invented certain new and useful Improvements in Calculating-Machines, of which the following is a specification. L

This invention relates to that type of calculating machines in which a plurality. of indicating and counting mechanisms are employed, the articular class of calculating machine .to W ich the invention relates being disclosed in Letters Patent #514,725, granted February 13, 1894, to Odhner and Letters Patent #772,935, granted October 25, 1904, to Hamann, in which and heretofore so far as I amaware, it has been customary to construct these calculating machines in such a manner that the indicating mechanisms and counting mechanisms. are turned to their zero positions independently of one another; the object of my present invention being the provision of a calculating machine so constructed that the indicating mechanlsms and counting mechanisms may be turned to their zero positions simultaneously and together and dependently the one on the other, or independently of one another at the pleasure of the operator.

In the example represented in the drawmg :-Figure 1 is a plan showing the general arrangement of the machine, the cover being removed and some parts being shown in hori-' zontal section: Fig. 2 is a plan partly in section showing the two shafts in their normal position, whereas Fig. 3, is a similar view of j the shafts after they have been rotated, both mechanisms having been influenced; Fig. 4

ranged a partition 7. Whereas hitherto the shaft 8 of the indicating mechanism 5 and the shaft 9 of the counting mechanism 6 Specification of Letters Patent.

there Paten ted Oct. 20, 1908..

were j'ournaled independently of one another in the partition 7, and each had to be reset to zero by itself by the crank-handle I 10 or the thumb-screw 11, according to the new construction in accordance with the present invention the partition 7 is perforated. The ends of the shafts 8 and 9 directed towards one another have holes made in them and plugs of a.piece 12 situated between the shafts extend into these 'holes. The center part 13 of the piece 12 is as large as the shafts 8 and 9. The shaft 8 is provided at its end with a cam-notch, one edge 14 of which is parallel to the direction of the shaft, whereas the edge 15 is beveled. On the part 13 of the piece 12 there is a nose 16 which extends into the notch in the shaft 8. Behind the plug 17 of the piece 12 there lies inthe hole in the shaft 9 a spring 18 which presses the intermediate 1piece 12 against the shaft 8. The plug 17 as a hole through it and is provided with a pin 19 which extends into slot-like incisions in shaft 9, so

that the plug must be driven when the shaft moves.

The manner in which the mechanisms are set to zero is the usuahone. It is effected by the shafts 8 or 9 being moved laterally, namel to' the outside. This 'is effected by being bushes 20 on the outside of the carriage which have a notch 21 beveled off in the direction of rotation. The shafts are each provided with a stop 22 which extends into the notch 21. Springs 23 provided inside the carriage press the two shafts towards the inside. The said shafts are provided with pins 25 each one of which is so placed as to coinewithin the open interior space ofone of the said figurewheels and on the inside thereof eachof the said figure wheels is provided with a short stop 26. The shafts may be rotated by a crank-handle or by a thumb-screw. When the shaft 1s rotated the-stop 22 must pass along on the I beveled side of the notch 21 of the bush 20 culation finished, the crank-handle 10 arranged at the right-hand of the carriage must be turned. By turning this crankhandle the shaft 8 is displaced towards the' outside in the above described manner and can drive the figure-wheels 24 by means of the ins 25. As the nose 16 extends into the note at the end of shaft 8, when the latter is rotated the edge 14 of this notch hits against the nose 16 and compels the piece 12 to participate in the rotation (Fig. 3). As the piece 12 is connected also with the shaft 9 by the plug 17 and pin 19 however, this shaft 9 must also participate in the rotary movement. As in the case of shaft 8, the stop 22 also laterally displaces the shaft 9 to the outside, so that'also the pins 25 of this shaft engage with the stops 26 in the figurewheels 24. I

In order that the connection of the piece 12 with the shaft 8 be not done away with when shaft 9 is displaced, the spring 18 is provided; the latter presses the piece 12 by means of lu 17 constantly against shaft 8 independenfiy of the displacement of shaft 9. On account of the pin 19 being guided in slots of the shaft 9, the displacement is likewise without influence on the position of the piece 12. Now if only the counting mechanism, for example, is to be set to zero, the thumb-screw 11 on the counting- -mcchanism shaft 9 must be rotated. The

manner of obtaining the zero position by displacing the shaft is the same as already described. The piece 12 must likewise again part cipate in this rotation, as it is connected positively with the shaft 9 in the direction of rotation by means of the pin 19. During this rotation the nose 16 can slide up on the beveled edge 15 of the notch at the end of shaft 8, so that the latter is not driven. (Fig. 4). At the end of one revolution the nose 16 will jump the notch of the shaft 8 again on account of the action of the spring 18. In the example represented the'shaft 8 is driven indirectly by'a crank-handle. Whether the shaft is driven in this manner or by a thuInP-screw as represented'in the case of shaft 9, or whether shaft 9 is also operated j by a crank-handle is without influence on the essence of the improvement. Generally s eaking these arrangements will depend on the kind of construction of the machine. Also the manner which the shafts are displaced laterally may be varied in' various ways. -What is essential is the manner in which several shafts are connected, so that on the one hand all the shafts are'rotated positively, whereas on the other hand only one shaft alone may be rotated.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is 1. In a calculating machine, the combination with a shaft, indicating mechanism thereon, a second shaft and counting mechanism on the latter, of means connecting one end of the former shaft with one end of the second shaft, the arrangement being such that when one shaft is rotated, the other is positively driven, whereas one shaft alone can be rotated, substantially as described.

2. In a calculating machine, the combination with a shaft, indicating mechanism thereon, means for rotatin and simultaneously laterally shifting said shaft, a second shaft, counting mechanism on the latter, and means for rotating and simultaneously laterally shifting the latter shaft, of a springpressed member connecting and adapted to be driven by the ends of said shafts, the arran ement being such that when the former shaft is rotated, the second shaft is also rotated ositively, whereas when the second shaft is rotated, the former shaft remains stationary, substantially as described.

3. In a calculating machine, the combina- L tion with a carriage and a perforated partition therein, of an indicating-mechanism shaft j ournaled in one side of the carriage, a counting-mechanism shaft journaled in one side of the carriage, and a spring-pressed intermediate iece movably connecting said shafts recti inearly through said partition,

the connection of said intermediate piece with said shafts being such that when the indicating mechanism shaft is rotated, the

counting-mechanism shaft is rotated posi,

tively, whereas when the latter shaft is rotated, the indicating-mechanism shaft re mains stationary, substantially as described. I 4:. In a calculating machine, the combination of an indicating-mechanism shaft having a hole and a cam-notch in one end and journaled in the side of the carriage, a countingmechanism' shaft having a hole in and a slotlike hole through one end and journaled in the side of the carriage, a iece in said artition having a plug at eacli side in an connecting the ends of said shafts, said piece carrying a nose adapted to said cam-notch and a pin in said slot-like hole, and a spring on the end of saidv counting-mechanism shaft pressing the plug in the same, substantially as described and for the purpose set forth.

The foregoing specification signed at Berlin, this 17th day of December 1907.

ERNST SCHUSTER.

In presence of FRITZ SOHROEDER, Hnmmon LUCKS. 

